Two stroke internal combustion engine having an intake piston adjacent each power piston

Abstract

A two stroke internal combustion engine having an intake piston which feeds air to an adjacent power piston. Both the intake piston and the power piston are held in oscillating cylinder assemblies and the piston rods are integral with the pistons so that the piston rod is always in line with the piston. The cylinder assemblies are both supported by trunnions and the air from the intake cylinder assembly is fed through an opening in the center of the two trunnions between the intake cylinder assembly and the power cylinder assembly. Preferably the rod portion of the intake piston and rod assembly is shorter than the rod portion of the power piston and rod assembly.

What is claimed is: 
     
       1. A two stroke internal combustion engine having an engine block supporting a crankshaft/flywheel assembly comprising: an intake piston and rod assembly having an intake piston portion and an intake rod portion, said intake rod portion thereof being supported on an intake crank throw of the crankshaft/flywheel assembly to permit turning of the crank throw within said intake rod portion;   an oscillating intake cylinder assembly having an intake cylinder which supports said intake piston, said intake cylinder assembly having an outer face and having an intake side trunnion and a power side trunnion about which the oscillating intake cylinder assembly oscillates;   crank case support plates having an intake piston trunnion support face, said intake piston trunnion support face holding the intake and exhaust side trunnions of said intake cylinder assembly;   means for opening and closing a passageway for air into said oscillating intake cylinder assembly;   means for opening and closing a passageway between said intake cylinder and a power cylinder, said means for opening and closing a passageway being located within said power side trunnion;   a power piston and rod assembly having a power piston portion and a power rod portion, said power rod portion thereof being supported on a power crank throw of the crankshaft/flywheel assembly to permit turning of the crank throw within said power rod portion, said intake crank throw and said power crank throw being 180° out of phase;   an oscillating power cylinder assembly having a power cylinder which supports said power piston, said power cylinder assembly having an outer face and having an intake side trunnion and an exhaust side trunnion about which the oscillating power cylinder assembly oscillates;   a pair of power piston trunnion support faces formed in said crank case support plates, said pair of power piston trunnion support faces holding the intake and exhaust side trunnions of said power cylinder assembly;   means for introducing fuel into the air to form an air/fuel mixture;   means for closing said cylinder of said oscillating power cylinder assembly above said power piston to permit the compression and detonation of said air/fuel mixture to impart downward movement to said power piston;   means for exhausting the resulting burned air/fuel mixture out of said oscillating power cylinder assembly; and   means for igniting the resulting compressed air/fuel mixture in said power cylinder.   
     
     
       2. The two stroke internal combustion engine of claim 1 wherein said means for opening and closing a passageway for air into said oscillating intake cylinder assembly comprises at least one trunnion-opening in a trunnion face formed within said intake side trunnion and at least one mating cylinder-opening through the intake cylinder assembly, said trunnion opening and said cylinder opening moving in and out of overlapping as the cylinder oscillates. 
     
     
       3. The two stroke internal combustion engine of claim 2 wherein there are two trunnion openings. 
     
     
       4. The two stroke internal combustion engine of claim 1 wherein said means for opening and closing a passageway for air between said intake cylinder and said power cylinder comprises at least one intake cylinder opening in an intake cylinder power side trunnion wall and a mating power cylinder opening in a trunnion face of said power intake side trunnion, said intake cylinder opening and said power cylinder opening moving in and out of overlapping as the intake cylinder and the power cylinder oscillate. 
     
     
       5. The two stroke internal combustion engine of claim 4 wherein there are two openings in said intake cylinder power side trunnion wall and two mating power cylinder openings in said trunnion face of said power intake side trunnion. 
     
     
       6. The two stroke internal combustion engine of claim 1 wherein said means for exhausting burned air/fuel mixture from said power cylinder comprises at least one opening in a trunnion wall formed within said exhaust side trunnion. 
     
     
       7. The two stroke internal combustion engine of claim 1 wherein said means for introducing fuel into said air comprises injecting fuel through a fuel line positioned within an opening in said intake cylinder opening in a trunnion face of said power intake side trunnion. 
     
     
       8. The two stroke internal combustion engine of claim 7 wherein said fuel line is held by the crank case support head. 
     
     
       9. The two stroke internal combustion engine of claim 8 wherein there is a first and a second injector connected to said fuel line, the first of said injectors being positioned so that it injects fuel in said opening in the trunnion face of said power side intake trunnion and the second injector is positioned so that it injects fuel through a wall of the oscillating power cylinder above the opening in the trunnion face of said power side intake trunnion. 
     
     
       10. The two stroke internal combustion engine of claim 1 wherein said means for igniting the resulting compressed air/fuel mixture comprises a spark plug secured to the oscillating power cylinder at the top thereof and wherein the spark plug is energized as it moves into contact with a contact point affixed to said crank case support plate. 
     
     
       11. A two stroke internal combustion engine having an engine block supporting a crankshaft/flywheel assembly comprising: an intake piston and rod assembly having an intake piston portion and an intake rod portion, said intake rod portion thereof being supported on an intake crank throw of the crankshaft/flywheel assembly to permit turning of the crank throw within said intake rod portion and said intake rod portion having an intake rod length;   an oscillating intake cylinder assembly having an intake cylinder which supports said intake piston, said intake cylinder assembly having a curved outer face and having an intake side trunnion and a power side trunnion which trunnions have a trunnion axis of oscillation about which the oscillating intake cylinder assembly oscillates, said oscillating intake cylinder assembly having an intake cylinder upper surface;   a crank case supporting plate having a curved intake piston support face, said intake piston support face holding the curved outer face of said intake cylinder assembly;   means for opening and closing a passageway for air into said oscillating intake cylinder assembly;   means for opening and closing a passageway between said intake cylinder and a power cylinder, said means for opening and closing a passageway being located within said power side trunnion;   a power piston and rod assembly having a power piston portion and a power rod portion, said power rod portion thereof being supported on a power crank throw of the crankshaft/flywheel assembly to permit turning of the crank throw within said power rod portion, said intake crank throw and said power crank throw being 180° out of phase, said power rod portion being longer than said intake rod portion;   an oscillating power cylinder assembly having a power cylinder which supports said power piston, said power cylinder assembly having a curved outer face and having an intake side trunnion and an exhaust side trunnion which trunnions oscillate about said trunnion axis of oscillation, and said oscillating power cylinder has a power cylinder upper surface which is farther removed from said trunnion axis of oscillation than is the intake cylinder upper surface;   a curved power piston support face formed in said crank case support plate, said curved power piston support face holding the curved outer face of said power cylinder assembly;   means for introducing fuel into the air to form an air/fuel mixture, said means for introducing fuel comprises a fuel injector held by said crank case support plate and having an injector outlet within a power cylinder trunnion wall formed within said intake side trunnion of said power cylinder;   means for closing said cylinder of said oscillating power cylinder assembly above said power piston to permit the compression and detonation of said air/fuel mixture to impart downward movement to said power piston;   means for exhausting the resulting burned air/fuel mixture out of said oscillating power cylinder assembly; and   means for igniting the resulting compressed air/fuel mixture in said power cylinder.   
     
     
       12. The two stroke internal combustion engine of claim 11 wherein said means for igniting the resulting compressed air/fuel mixture comprises a spark plug secured to the oscillating power cylinder at the top thereof and wherein the spark plug is energized as it moves into contact with a contact point affixed to said crank case support plate. 
     
     
       13. The two stroke internal combustion engine of claim 12 wherein said fuel injector is operated by a conductive member affixed to said spark plug.